Chemistry test

Yr 7

does a solid have a fixed or variable shape

fixed shape and volume due to closely packed particles.

does a liquid have a fixed or variable shape

variable shape, taking the shape of its container.

does a gas have a fixed or variable shape

variable

which one(s) takes the shape of their container, solids, liquids, gas

Liquids and gases take the shape of their container, while solids maintain a fixed shape.

which one(s) have particles that move, solid, liquid, gas

Solids, liquids and gasses all move in a way

solid volume fixed or variable

fixed

liquid volume fixed or variable

fixed

gas volume fixed or variable

variable

solid able to flow

no

liquid able to flow

yes

gas able to flow

yes

solid able to be compressed

no

liquid able to be compressed

no

gas able to be compressed

yes

solid takes up space

yes

liquid takes up space

yes

gas takes up space

yes

solids have a fixed shape.

solid particles cannot roll or move past each other, but they do vibrate

liquids take the shape of their container

liquids take the shape of their container because the particles can move past each other

gases can be compressed

gases can be compressed because their particles are far apart so they can be pushed closer together

condensation energy - or+

energy removed -

deposition energy - or+

energy removed -

freezing energy - or+

energy removed-

melting energy - or+

energy added+

sublimation energy - or+

energy added+

vaporisation(boiling) energy - or+

energy added+

solute

the solute is the substance that dissolves

solvent

the solvent is the substance that the solute dissolves in

solution

the solution is the mixture formed when a solute dissolves in a solvent

what is water a solvent, solute or solution

solvent

what is instant coffee granules a solvent, solute or solution

solute

what is morning cup of coffee a solvent, solute or solution

solution

a substance that dissolves in a liquid is said to be in the liquid

soluble

a substance that does not dissolve in a liquid is said to be in the liquid

insoluble

when a solute dissolves in a solvent a is formed

solution

when an insoluble substance is mixed with water a is formed

suspension

decantation

to separate two liquids that do not mix

sieving

to separate a mixture containing two solids with different sized particles

evaporation

to obtain the solute from a solution

filtration

to obtain the sediment from a suspension

distillation

to obtain the solvent from a solution

salt from salt/water mixture

evaporation

salt from salt/sand mixture

add water, filter, evaporate

sand from sand/water mixture

filtration

water from rocks/water mixture

sieving

iron filings from iron filings/sand mixture

magnetic

different pigments in a food colouring mixture

chromatography

matter

anything which has mass and takes up space.